Is Project Management a profession?

I am a member of PMI and have been part of their forum and listserv for a while. I came across this interesting article today written by a lifelong project manager who is trying to argue that project management is not a stand alone profession. I would not necessarily agree with Paul completely given the fact that I am a project manager and would like to think that I am a professional. Read Paul's arguments. What are your thoughts or opinions in this matter?